Pearl Oyster Liquid Culture Syringe (10cc)

About Pearl Oyster

The gateway mushroom for new growers and a reliable workhorse for seasoned cultivators, Pearl Oyster (Pleurotus ostreatus) rewards almost any effort with fast, prolific flushes. Its shelf-like caps range from pale grey to soft ivory and develop a delicate, slightly chewy texture when cooked — the same mushroom you'll find piled high in farmers' market baskets and high-end restaurant kitchens. If you're starting your mycology journey, this is the strain that will have you harvesting within weeks, not months.

Growing Notes

• Difficulty: Beginner
• Preferred substrate: Straw, hardwood sawdust, paper pellets, supplemented sawdust blocks, coffee grounds
• Fruiting temperature: 55–75°F
• Colonization speed: Fast
• Special considerations: Extremely forgiving of substrate choice and contamination pressure. Provide generous fresh air exchange (FAE) once pinned to encourage broad, flat caps rather than long, stretched stems.

Culinary Uses

Pearl Oysters have a mild, slightly anise-like aroma and a tender, meaty bite that holds up beautifully to sautéing, roasting, and stir-frying. Try them seared hard in butter with garlic and thyme, or pull them into "pulled-oyster" sandwiches shredded and glazed in BBQ sauce. They shrink less than most grocery-store mushrooms, making them a favorite of chefs who want yield and texture.

Usage Instructions

• Sanitize your work area, tools, and contact surfaces before handling.
• Prepare grain, substrate, agar, or grow kits according to your standard operating procedures.
• Introduce the liquid culture using sterile or near-sterile technique (e.g., in front of a flow hood or still-air box when applicable).
• Maintain species-appropriate incubation and fruiting conditions for temperature, humidity, and fresh air exchange.

Shelf Life & Storage

Store refrigerated at 34–39°F (1–4°C) away from direct sunlight. Under proper storage, typical shelf life is 3–6 months unopened. Always visually inspect for contamination, damage, or off-odors before use.

Quality & COA

Each batch is prepared using standardized procedures and test-inoculated on appropriate media before release. These internal checks act as our in-house Certificate of Analysis (COA) to confirm viability and cleanliness at the time of packaging.

Strain Profile

• Common name: Pearl Oyster
• Scientific name: Pleurotus ostreatus
• Strain: Isolated culture
• Difficulty: Beginner
• Preferred substrate: Straw, hardwood sawdust, supplemented blocks
• Use case: First-time growers, high-yield gourmet production, rapid harvests

How to Use This Liquid Culture

1. Sterilize the injection port on your grain bag with an alcohol prep pad.
2. Shake the syringe vigorously for 10-15 seconds to disperse the mycelium evenly.
3. Inject 1-2cc of liquid culture through the self-healing injection port of your grain bag. Less is more — 1cc is usually plenty.
4. Seal and incubate the bag at 70-75°F in a clean, dark space.
5. Wait for colonization — white mycelium will begin spreading through the grain within 2-4 weeks.

Temperature & Timeline: Colonization typically takes 2-4 weeks at 70-75°F. Warmer is not better — temperatures above 80°F increase contamination risk.

Signs of Success: You'll see white, fluffy mycelium spreading outward from injection points. The grain will become covered in a uniform white coating when fully colonized.

Next Steps: Once the grain is fully colonized, transfer it to a bulk substrate or introduce fruiting conditions, depending on your setup.

Common Mistake: Injecting too much liquid culture does not speed up colonization — it wastes culture and can introduce excess moisture that encourages contamination. Stick to 1-2cc per bag.

What's in the Box

• 1x 10cc liquid culture syringe
• 1x sterile needle
• 1x alcohol prep pad